the fbi is here, as you can see, they roped the area off. they were taking photographs and securing the area, just prior to that huge explosion that we all heard [sirens] >> everything just all of a sudden just imploded. i ran as fast as i could and then all of a sudden, the building started to fill up with smoke. you couldn't get out of the building because everything was locked up. and i came out and everything was filled with ashes. >> can anybody hear me! i'm a civilian! i am trapped inside one of the fire truck, underneath. >> what happened? you were right there in the building? >> yes. >> you all right? >> a lot of people trapped. >> e.m.t. >> guy needs help. you can talk to us for a minute? how do you feel? you all right? >> no, not at all. >> i feel bad approaching these people. i mean, they are covered. they are obviously in pain. [sirens] >> and the place where that plane hit, the outer wall of the building and the building is a series ever concentric rings, so when you hit the outer wall, you are only affecting that part of t. but